Electronics

Peter Werzer · Guest

Hey,

I have a puls generator mentioned above.

The settings for the impuls frequency and width and so
on work fine but there is a problem.
If I set the the impedance on 10kOhms I
only get 4V amplitude instead of 19.99V and at 50 Ohm there is
only 200mV instead of 9.99V. I have not found anything to change
this behavior! Also there is shown an error message "PARAM" if I press
the High Level (HIL) botton or the Low Level (LOL)
botton.
The DC-voltage is on the 0-line at about -7.5V and
oscillate 300mV up and down.

If there is someone who knows what is wrong please let me know!

best regards
Peter

carneyke · Guest

Pete,
You have a problem with one of the output hybrid modules. If your unit
is a dual channel option, you have modules to swap. These modules were
very expensive (made internally by HP) and were a high failure item.
There are lots of boards to swop if you have a dual channel unit.
Remember to mark board and dip switch / switch settings. You will have
to shange setiings if you have a dual channel option and swop boards
from "A" to"B". Good Luck, Kevin

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